Mechanical ventilation facility by moisture-adjusted insufflation and associated method
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Solution Overview
Problem
Current mechanical ventilation systems by insufflation do not account for the humidity of outside air, leading to increased humidity levels inside dwellings during high atmospheric humidity periods, which contradicts the goal of air renewal and can result in users having to interrupt ventilation.
Innovation Solution
A mechanical ventilation installation with a continuous blowing module that includes air inlet vents, a blowing chamber with a fan and preheating means, relative and temperature sensors inside and outside the room, and a calculation and control unit to modulate airflow based on indoor and outdoor humidity and temperature, ensuring the introduction of air with lower absolute humidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical ventilation by insufflation increases blowing rate to expel humid air, then air renewal is improved, but indoor humidity increases when outside air is humid
Solution Approach 1:
The system uses humidity sensors to continuously monitor both indoor and outdoor air humidity levels, feeding this information back to the control unit which automatically adjusts the blowing rate accordingly
Solution Approach 2:
The blowing rate is made dynamically adjustable based on real-time humidity conditions - the system transitions from fixed-rate ventilation to variable-rate ventilation that adapts to changing environmental conditions
2Productivity
If ventilation operates continuously to maintain air quality, then air renewal is improved, but energy consumption increases
Solution Approach 1:
The system employs periodic measurement of humidity parameters and adjusts ventilation operation accordingly, allowing periods of reduced ventilation when conditions permit while maintaining air quality standards
3Ease of operation
If preheating means are added to warm incoming air, then comfort is improved, but device complexity increases
Solution Approach 1:
The preheating means act as an intermediary element between the cold outdoor air and the indoor environment, warming the air before it enters the living space to eliminate the draught sensation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for continuous and efficient air renewal, maintaining indoor air quality by minimizing the entry of humid air and ensuring ventilation operates regardless of outdoor conditions, adhering to recommendations for complete air renewal every two hours.
Implementation Method 1
a blowing chamber (2) containing a fan (20) and including means for preheating the incoming air
Implementation Method 2
a blowing chamber (2) containing a fan (20)
Data Source
Figure 1~3
Figure 4
AI summary
The installation has an air insufflation chamber (2) including an air inlet duct (21) connected to air inlet channels. Each channel is connected to outer air inlet nozzles (10, 11) captured in different locations at an outer side of a premise (22) to be ventilated. Tiltable flaps (9) ensure admission of air issued from the nozzles to the air inlet duct depending on temperature and/or humidity of the captured outside air in order to minimize intake of outside air having absolute humidity greater than absolute humidity of the indoor air of the premise. An independent claim is also included for a method for mechanical ventilation of a premise.